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(No Model.) 3 Sheds-Sheet 1[ Y W. S. SHARPNEGK.

SPEED GOVERNOR FOR GAS ENGINES.

Patented Nov. 18, 1890.

3 Sheets--She et 2.

(No Model.)

W. S; SHARPNEGK. SPEED GOVERNOR FOR GAS ENGINES.

No. 441,024. v Patented Nov. 18', 1890.

R1 I i A t I; T I l Q a I N 1 Q 44 77Z2$66J /707Z71 "f'a't Q (No Model.)4 3 S-heets'-Sheet 3.

W. S. SH NECK; I SPEED GOVERNOR GAS ENGINES.

.No. 441,024. Patented Nov. 18, 1890. i

E-Eiilllllllllll UNITED STATES PATENT OFFICE.

VILLIAM S. SHARPNECK, OF CHICAGO, ILLINOIS, ASSIGNOR TO FRANCIS T.XVI-IEELER, OF SAME PLACE.

SPEED-GOVERNOR FOR GAS-ENGINES.

SPECIFICATION forming part of Letters Patent No. 441,024, dated November18, 1890.

Application filed February 5, 1890.

To all whom it may concern..-

Be it known that I, WILLIAM S. SHARP- NECK, a citizen of the UnitedStates, residing at Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements inSpeed-Governors for Gas- Engines, of which the following is aspecification, reference being had therein to the accompanying drawings.

My invention relates to speed-governors, and has especial reference to agovernor for use upon gas-engines, although it may be used upon otherengines and be effective for the intended purpose.

The object of my invention is the provision of a governor which will besuperior to others in simplicity, inexpensiveness, and generalefficiency.

To attain the desired object, my invention consists of the novelconstruction and combination of parts, substantially as illustrated,described, and specifically claimed.

I have illustrated my governor as applied to the gas-engine and valvewhich I have applications for of even date herewith; but I would have itunderstood that I do not limit myself to its employment upon the same,but reserve the right to use it upon any engine where it will operate;and in said drawings Figure 1 represents a plan of the engine with valveand governor applied, the valve and governor being represented insection. Fig. 2 represents a plan view, partly sectional, of thegovernor, the parts being shown in the position they occupy when thecharge is admitted to the engine. Fig. 3 represents a similar View, theparts being in the position they occupy when the gas-port is closed orwhen the charge is prevented from entering the engine. Fig. l is adetail showing part of the governor-cylinder and a spring reliefcock, anedge view of the latter being also shown below it. Fig. 5 is a face viewof a cam-disk and its attached parts.

Referring by numerals to the drawings, in which similar numerals ofreference denote corresponding parts in the several figures, the numeral1 design ates the engine, 2, the valvecase, and 3 the valve, theconstruction and operation of which are fully illustrated and describedin the applications therefor presented by me of even date herewith andserially Serial No. 339377. (No model.)

numbered 339,278 and 339,279. Communicating with the inlet-port of thevalve-case is the charging-pipe 4, through which'thec harge of air andgas enters, and which is provided with an opening 5, with whichcommunicates the gas-inlet pipe 6. The gas-inlet pipe leads from thecylinder 7, having the inlet 8 for the gas, the sleeve or barrel 9, theair-escape opening 10, (see Fig. 4,) and the series of openings 11, thepurpose of which will presently appear. Fitting in one end of thecylinder is the piston-valve 12, which comprises two pistons arrangedsufficiently far apart to allow a free passage for gas through the inlet8 into the pipe 6 when the valve is in one position. The upper part ofthe cylinder thus forms a valve-case.

To the outer face of the outer disk of the valve is connected (in thisinstance by means of a short bar) the outer end of the springactuatedrod l'3, which is arranged in the barrel or sleeve 9 of the cylinder 7,and the outer end of the rod is rounded at 14 and provided with a lug orshoulder 15. This rod is reduced in size for the major part of itslength, which part is made springlike, and is so arranged as to alwaystend to carry its lower end toward a cam-disk 20, hereinafter referredto.

On the shaft of the valve is an eccentric 16, with which engages theyoke 17 of the rod 18, which carries the piston 19, arranged and workingin the cylinder 7, and on said shaft adjacent to the eccentric is awheel or disk 20, (shown in a larger scale in Fig. 5, which shows theface of said disk,)' which carries a cam 21, a lug 22, and is flanged at23, said flange being reduced at 24, the purpose of which will appear.

Above the opening 10 of the cylinder 7, I pivot a spring relief cock orslide 25, having a handle for the ready manipulation thereof, and anopening 25 adapted to communicate with the escape-opening 10 to regulatethe escape and govern the speed,and on the under side a pin or studadapted to enter the openings in thescale or indicator 26.

This being the construction of my governor, the consequent operation isas follows: The ports being in their normal position, as shown in Figs.1 and 2, allowing the charge of gas and air to pass into the cylinder,the cam 21 revolves in the direction of the arrow, (see Fig. 5,) andacting upon the rounded end 14 of the spring-actuated rod 13, causing itto move in the direct-ion of the arrow, (see Figs. 2 and 3,) and theresiliency of the spring portion of said rod 13 causes the lug 15 toslide over and ride upon the flange 23 of the disk 20, thus closing theentrance to the pipe 6,as shown in Fig. 3. The lug 15 remains on theflange 23 until the reduced portion 24 arrives in line with the lug 15,when, if the engine is running at its normal speed, the pressure of thespiral spring around the rod 13 causes it to descend, and thus allowsthe gas to enter, as before. Should, however, the engine be running toofast, the piston 19 will compress the air into the space between saidpiston and the piston-valve above it faster than it can escape throughthe relief-cock, which will prevent the descent of the rod 13 until thelug 22 on the cam-disk 20 passes under the lug 15 and guides the latteronto the flange 23, where it is retained, keeping the pistonvalve 12 inthe position shown in Fig. 3, and preventing the passage of the gasthrough the pipe 6 until the speed of the engine has moderated, when thepressure of the compressed air between the piston and pistonvalve is nolonger sufficient to prevent the rod 13 descending, and by carrying thevalve with it allow the gas to pass through the pipe 6, when theprevious operations are repeated. Thus it will be seen that the valve isopened and closed by the action of the cam and the spring-actuated rod,and the engine charged at proper intervals; but should the engine beginto run at a greater speed than is required and necessary the action ofthe piston 19 in the cylinder 7 would compress the air between it andthe valve and force said valve out-ward, closing it and preventing gasfrom entering. WVhen the engine returns to its proper speed the partsact as before described, and as the engine begins to run at a higherspeed than is required it is governed by the action of the piston.

It is evident that the valve is operated by the rod and cam while theengine is running at the proper rate of speed, and that the action ofthe piston is quickened as the engine runs faster and compresses the airbetween said piston and the valve and retains said valve in position toclose the gas-inlet until the speed is reduced.

It will thus be seen that I provide a very simple governor, which isthoroughly efficient and will govern the speed of the engine in aperfect manner.

I would also have it understood that I do not limit myself to theconstruction herein described, as I may make changes in the same withoutdeparting from the spirit or sacrificing any of the advantages of myinvention.

The series of openings 11 on the cylinder 7 are to allow air to be drawninto the cylinder.

I claim as my invention- 1. In a speed-governor, a valve-case, inlet andoutlet ports therein, two connected pis-, tons, one of which acts as avalve and closes the outlet-port, and the two arranged in opposite sidesof the inlet-port, and means, as the piston 19, for acting on the airinclosed between the piston and the valve to operate said valve,substantially as described.

2. In a speed-governor, a valve-case, inlet and outlet ports therein,two connected reciprocating pistons, one of which acts as a valve andcloses the outlet-port and the two arranged in opposite sides of theinlet-port, and a reciprocating piston acting on the air inclosedbetween the piston and valve, substantially as described.

3. In a speed-governor, a cylinder, inlet and outletports therein, twoconnected reciprocating pistons, one of which acts as a valve and closesthe outlet, and the two arranged in opposite sides of the inlet-port, areciproeating piston in the other end of the cylinder acting upon theair inclosed between the piston and piston-valve, substantially asdescribed.

4. In a speed-governor, a cylinder 7, the inlet 8, the pipe 6, leadingfrom the cylinder, double piston-valve 12, the reciprocating piston 19,and the spring-actuated rod 13 to re turn the valve against the pressurein the cylinder, substantially as described.

5. In a speed-governor, a cylinder 7, having inlet 8 and outlet 6, areciprocating piston 19, a double piston valve 12, a springactuated-rodconnected with said valve and having rounded end 14 and lug 15, incombination with the revolving disk 20, having cam 2l,"lug 22, flange23, and reduced portion 24, substantially as described.

6. In a speed-governor, a cylinder 7, the inlet 8, the pipe 6, leadingfrom the cylinder, the double piston-valve 12, the reciprocating piston19, the spring-actuated rod 13 to return the valve against the pressurein the cylinder, an opening in the cylinder to admit of the passage ofthe air from the same, and the adjustable spring relief-cock 25,governing the passage of the air through said opening, substantially asdescribed.

7. I11 2. speed-governor, the combination of the valve, the rodconnected thereto and having the lug, the cam engaging said rod, thedisk having the flange to receive the lug on said rod, and the lug forengaging said lug, substantially in the manner and for the purposespecified.

In testimony whereof I aflix my signature, in presence of two witnesses,this 31st day of January, 1890.

ILLIAM S. SI-IARPNEGK.

\Vitnesses:

T. E. ROBERTSON, WM. N. MOORE.

IIO

